could saturate
Regular verb: saturate - saturated- saturated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could saturate
you could saturate
he could saturate
we could saturate
you could saturate
they could saturate 	I could be saturating
you could be saturating
he could be saturating
we could be saturating
you could be saturating
they could be saturating	I could have saturated
you could have saturated
he could have saturated
we could have saturated
you could have saturated
they could have saturated	I could have been saturating
you could have been saturating
he could have been saturating
we could have been saturating
you could have been saturating
they could have been saturating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't saturate
you couldn't saturate
he couldn't saturate
we couldn't saturate
you couldn't saturate
they couldn't saturate 	I couldn't be saturating
you couldn't be saturating
he couldn't be saturating
we couldn't be saturating
you couldn't be saturating
they couldn't be saturating	I couldn't have saturated
you couldn't have saturated
he couldn't have saturated
we couldn't have saturated
you couldn't have saturated
they couldn't have saturated	I couldn't have been saturating
you couldn't have been saturating
he couldn't have been saturating
we couldn't have been saturating
you couldn't have been saturating
they couldn't have been saturating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I saturate?
could you saturate?
could he saturate?
could we saturate?
could you saturate?
could they saturate? 	could I be saturating?
could you be saturating?
could he be saturating?
could we be saturating?
could you be saturating?
could they be saturating? 	could I have saturated?
could you have saturated?
could he have saturated?
could we have saturated?
could you have saturated?
could they have saturated? 	could I have been saturating?
could you have been saturating?
could he have been saturating?
could we have been saturating?
could you have been saturating?
could they have been saturating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I saturate?
couldn't you saturate?
couldn't he saturate?
couldn't we saturate?
couldn't you saturate?
couldn't they saturate? 	couldn't I be saturating?
couldn't you be saturating?
couldn't he be saturating?
couldn't we be saturating?
couldn't you be saturating?
couldn't they be saturating? 	couldn't I have saturated?
couldn't you have saturated?
couldn't he have saturated?
couldn't we have saturated?
couldn't you have saturated?
couldn't they have saturated? 	couldn't I have been saturating?
couldn't you have been saturating?
couldn't he have been saturating?
couldn't we have been saturating?
couldn't you have been saturating?
couldn't they have been saturating?